Mostyn Square, Llanishen, Cardiff

House prices, sold prices and local information for CF14 5FE.

Average price (last 12 months)
£364,000
2 sales
Average price (since 2016)
£292,367
15 sales
Price range
£227k – £390k
lowest to highest sale
Last sale
10 Dec 2025
CF14 5FE

At a glance

House prices£364k average16% above the Cardiff average Crime151 reportedWithin about a mile, latest month Flood riskNo flood warning areasFrom rivers or the sea Nearest station4 min walkTy Glas station Ultrafast broadband100% of homesNational average 80%

15 property sales on Mostyn Square, Llanishen, Cardiff have been recorded by HM Land Registry since 2016. In the last 12 months 2 homes sold here for an average of £364,000. Most sales here are terraced homes, which have sold for an average of £292,367. Average sale prices rose from £255,000 in 2016 to £364,000 in 2025 (+43%), though averages on a single street can swing with the mix of homes sold. That is 16% above the Cardiff average of £312,948 over the same period. 4 homes here have sold more than once since 2016; 4 of them sold for more the second time.

House prices on Mostyn Square compared

Mostyn Square£364,000
CF14 postcode area£361,302
Cardiff£312,948
England & Wales£356,718

Average sale price over the last 12 months. See all CF14 house prices.

Average sale price by year

2016: £255,000 (2 sales)2016£255k2017: £236,750 (2 sales)2017£237k2018: £263,500 (2 sales)2018£264k2019: £263,500 (1 sales)2019£264k2020: £274,000 (1 sales)2020£274k2021: £265,000 (2 sales)2021£265k2022: £360,000 (1 sales)2022£360k2023: £347,000 (1 sales)2023£347k2024: £372,500 (1 sales)2024£373k2025: £364,000 (2 sales)2025£364k

Prices by property type

TypeSalesAverage priceLast sold
Terraced15£292,36710 Dec 2025

Sold prices on Mostyn Square

AddressDatePriceTypeTenure
35, Mostyn Square CF14 5FE 10 Dec 2025£390,000 TerracedFreehold
3, Mostyn Square CF14 5FE 28 Nov 2025£338,000 TerracedFreehold
41, Mostyn Square CF14 5FE 21 Nov 2025£365,000 TerracedFreehold
16, Mostyn Square CF14 5FE 10 May 2024£372,500 TerracedFreehold
5, Mostyn Square CF14 5FE 8 Nov 2023£347,000 TerracedFreehold
Garage 110, Mostyn Square 5 May 2023£430,000 OtherLeasehold
15, Mostyn Square CF14 5FE 25 Aug 2022£360,000 TerracedFreehold
6, Mostyn Square CF14 5FE 7 May 2021£265,000 TerracedFreehold
4, Mostyn Square CF14 5FE 26 Apr 2021£265,000 TerracedFreehold
3, Mostyn Square CF14 5FE 10 Feb 2020£274,000 TerracedFreehold
5, Mostyn Square CF14 5FE 17 Jan 2019£263,500 TerracedFreehold
14, Mostyn Square CF14 5FE 12 Dec 2018£245,000 TerracedFreehold
16, Mostyn Square CF14 5FE 31 May 2018£282,000 TerracedFreehold
12, Mostyn Square CF14 5FE 21 Jul 2017£226,500 TerracedFreehold
29, Mostyn Square CF14 5FE 27 Jan 2017£247,000 TerracedFreehold
16, Mostyn Square CF14 5FE 18 Oct 2016£270,000 TerracedFreehold
41, Mostyn Square CF14 5FE 29 Jan 2016£240,000 TerracedFreehold

Sale prices are as recorded by HM Land Registry. Some sales (for example repossessions and company purchases) are listed but left out of the averages.

Sale history: homes sold more than once

AddressSalesChange
3, Mostyn Square £274,000 (Feb 2020) → £338,000 (Nov 2025) +23%
over 6 yrs
41, Mostyn Square £240,000 (Jan 2016) → £365,000 (Nov 2025) +52%
over 10 yrs
16, Mostyn Square £270,000 (Oct 2016) → £282,000 (May 2018) → £372,500 (May 2024) +38%
over 8 yrs
5, Mostyn Square £263,500 (Jan 2019) → £347,000 (Nov 2023) +32%
over 5 yrs

Buying on Mostyn Square?

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Crime and flood risk near Mostyn Square

Crime

151 crimes were reported within about a mile of Mostyn Square in August 2026.

Violence & sexual offences43
Anti-social behaviour26
Public order18
Vehicle crime17
Other theft11
Shoplifting10

Source: data.police.uk. Locations are approximate and cover the surrounding area, not just this street.

Flood risk

Mostyn Square is not in or near any Environment Agency flood warning or alert area.

Flood warning areas cover places at risk from rivers and the sea. Surface water risk isn't included. Check the long-term flood risk for a postcode on GOV.UK.

Getting around and local GPs

Train stations

  • Ty Glas station 0.2 mi · 4 min walk
  • Birchgrove station 0.2 mi · 5 min walk
  • Rhiwbina station 0.7 mi · 14 min walk

Nearest bus stops

  • Tatham Road (after, Ashbourn Way) 1 min walk
  • Tatham Road (before, Ashbourn Way) 1 min walk
  • Llys Enfys (nr, Smith Road) 2 min walk
  • Llys Enfys (nr, Smith Road) 2 min walk

GP surgeries

  • Birchgrove Surgery
    Caerphilly Road, Cardiff · 0.5 mi
  • Llanishen Court Surgery
    Llanishen Court, Llanishen, Cardiff · 0.5 mi
  • St. Isan Road Surgery
    46 St. Isan Road, Heath Cardiff, Cardiff · 0.6 mi
  • North Cardiff Medical Centre
    Excalibur Drive, Thornhill, Cardiff · 1.0 mi

Sources: Department for Transport (NaPTAN) and NHS England practice data. Walking times are estimates from straight-line distance.

Area profile

Homes

HereEng & Wales
Owned44.1%62.5%
Private rented30.4%20.3%
Social rented25.5%17.1%
Households682

People

HereEng & Wales
Under 1516.5%17.4%
Aged 15–6468.4%64.1%
Aged 65+15.2%18.6%
Residents1,299

Broadband

HereUK
Superfast (30Mbit+)100%95%
Ultrafast (300Mbit+)100%80%
Gigabit-capable100%80%

Share of homes on this street's postcodes that can get each speed. UK figure is the average across all postcodes. Source: Ofcom Connected Nations.

Neighbourhood figures cover the surrounding Lower Layer Super Output Area (about 1,500 residents). Sources: Census 2021 (ONS) and the English Indices of Deprivation 2025.

Nearby streets in CF14

See all streets in Cardiff All streets in CF14